docs: remove redundant default empty strings values

(cherry picked from commit 3d928c0)
(cherry picked from commit 433b6b4)

Author: alan-agius4

packages/angular_devkit/build_angular/src/builders/browser/schema.json

@@ -141,8 +141,7 @@
     },
     "resourcesOutputPath": {
       "type": "string",
-      "description": "The path where style resources will be placed, relative to outputPath.",
-      "default": ""
+      "description": "The path where style resources will be placed, relative to outputPath."
     },
     "aot": {
       "type": "boolean",

packages/angular_devkit/build_angular/src/builders/server/schema.json

@@ -74,8 +74,7 @@
     },
     "resourcesOutputPath": {
       "type": "string",
-      "description": "The path where style resources will be placed, relative to outputPath.",
-      "default": ""
+      "description": "The path where style resources will be placed, relative to outputPath."
     },
     "sourceMap": {
       "description": "Output source maps for scripts and styles. For more information, see https://angular.io/guide/workspace-config#source-map-configuration.",

packages/schematics/angular/class/schema.json

@@ -36,8 +36,7 @@
     },
     "type": {
       "type": "string",
-      "description": "Adds a developer-defined type to the filename, in the format \"name.type.ts\".",
-      "default": ""
+      "description": "Adds a developer-defined type to the filename, in the format \"name.type.ts\"."
     }
   },
   "required": ["name"]

packages/schematics/angular/interface/schema.json

@@ -30,7 +30,6 @@
     },
     "prefix": {
       "type": "string",
-      "default": "",
       "description": "A prefix to apply to generated selectors."
     },
     "type": {

tests/angular_devkit/core/json/schema/serializers/schema_benchmark.json

@@ -55,17 +55,14 @@
                   "properties": {
                     "glob": {
                       "type": "string",
-                      "default": "",
                       "description": "The pattern to match."
                     },
                     "input": {
                       "type": "string",
-                      "default": "",
                       "description": "The dir to search within."
                     },
                     "output": {
                       "type": "string",
-                      "default": "",
                       "description": "The output path (relative to the outDir)."
                     }
                   },
@@ -395,8 +392,7 @@
           "properties": {
             "prefix": {
               "description": "Prefix to apply to interface names. (i.e. I)",
-              "type": "string",
-              "default": ""
+              "type": "string"
             }
           }
         },